Answer
$t^4+8t^2+8t-12$.
Work Step by Step
The given polynomial is
$=(t^4-t^2+t)-(12-9t^2-7t)$
Clear the parentheses.
$=t^4-t^2+t-12+9t^2+7t$
Group like terms.
$=t^4-t^2+9t^2+t+7t-12$
Combine like terms.
$=t^4+8t^2+8t-12$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 7 - Polynomial Equations and Factoring - 7.1 - Adding and Subtracting Polynomials - Exercises - Page 363: 37
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